I think what Vitor meant was that kicks like that are lucky and the harder and better you train the luckier you get.

He's being passive aggressive...because in the same breath he says But I think it’s something that if he tried to do in ten fights he would only be succeeded once (laughs). He deserved it. I was doing fine on the fight, I was winning it, but I wasn’t lucky to fit that punch,
Too bad for him that the one kick Silva succeeded on was to his face..